疯狂赛车

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Friction Type Drill Kelly Bar

疯狂赛车Friction Type Drill Kelly Bar is a kind of drill pipe type with international advanced six-ribs distribution technology composition. The Kelly bar can generate pressure force when the Kelly bar rotarying can produce peripheral force and the rotary passing down the pressure force can produce the...

Detailed description

疯狂赛车Friction Type Drill Kelly Bar is a kind of drill pipe type with international advanced six-ribs distribution technology composition.

疯狂赛车The Kelly bar can generate pressure force when the Kelly bar rotarying can produce peripheral force and the  rotary passing down the pressure force can produce the friction force. It is simple operation, drilling depth . it is suitable for soft soil and mud sand .

疯狂赛车The complete Kelly bar is with light weight, high strength, high linearity of the single drill pipe.; The inner and outer layer collocate reasonably , with good wear resistance plate.. it is great to meet the special requirement of the drill rig machine.


No.

OD

Section

Way of crowding

Length of per section(m)

Drill depthTorque

1

¢299

3

4

5

疯狂赛车(friction-type)

9-14

24 – 65

100 -120

2

¢342

3

4

5

疯狂赛车(friction-type)

9-14

24 – 65

100 -120

3

¢355

3

4

5

疯狂赛车(friction-type)

9-14

24 – 65

100 -120

4

¢368

3

4

5

(friction-type)

9-14

24 – 65

150-180

5

¢377

3

4

5

(friction-type)

9-14

24 – 65

150-180

6

¢394

3

4

5

疯狂赛车(friction-type)

9-15

24 – 70

180-200

7

¢406

3

4

5

疯狂赛车(friction-type)

9-15

24 – 70

180-200

8

¢419

3

4

5

(friction-type)

9-15

24 – 70

200-230

9

¢440(445)

4

5

6

(friction-type)

9-15

24 – 85

220-260

10

¢470

4

5

6

(friction-type)

9-18

24 – 102

220-260

11

¢508

4

5

6

(friction-type)

9-18

24 – 102

260-360

12

¢530

4

5

6

疯狂赛车(friction-type)

9-20

32 – 114

320-400

13

¢580(575)

4

5

6

(friction-type)

9-24

32 – 138

360-420

14

¢630

4

5

6

(interlock-type)

9-26

32 – 150

400-500

疯狂赛车The external key of the friltional pressurizing kelly bar has three or six keys(straight bar),there is no large concave pressuring table in the middle(look at fig), and there are three keys or six keys wear-resistant bar in the internal key. When the driving force rotates,the internal key of the driving sets push the straight bar of the exteral key of the kelly bar ,to drive the rotary drill.The peripheral force which is pruduced when the kelly bar rotaries pass down pressure to produce friction to produce pressure. This kelly bar pressure transmission in general applicable to the kelly bar soft construction of the layer formation or dritf sand formation. Grinding resistance pressurizing kelly bar is usually formed by five sections or six sections , with the depth in the range of 50-90 meter.


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